Suppose a particular lever has a mechanical advantage of 0.5.Determine which two of the following statements about the lever are true. It is a speed multiplierIt is a force multiplierIts effort arm is twice as long as its resistance armIts resistance arm is twice as long as its effort armI'm not sure
Question
Suppose a particular lever has a mechanical advantage of 0.5.Determine which two of the following statements about the lever are true. It is a speed multiplierIt is a force multiplierIts effort arm is twice as long as its resistance armIts resistance arm is twice as long as its effort armI'm not sure
Solution
The mechanical advantage of a lever is calculated by the ratio of the length of the effort arm to the length of the resistance arm. If the mechanical advantage is less than 1 (as in this case, where it is 0.5), it means that the effort arm is shorter than the resistance arm.
So, the correct statements are:
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It is a speed multiplier: A lever with a mechanical advantage less than 1 is a speed multiplier. This is because a smaller effort moves a larger distance, resulting in a greater speed at the resistance.
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Its resistance arm is twice as long as its effort arm: Since the mechanical advantage is 0.5, this means the resistance arm is twice as long as the effort arm.
The other two statements are false in this case.
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